Google Tag Manager Event Setup Guide for Business Websites

Google Tag Manager (GTM) lets you add and manage tracking events on a business website without editing code every time. This guide walks through setting up a lead-generation event end to end, from the GA4 tag to a published GTM container.

Prerequisites

1. GA4 property
2. GA4 Web Data Stream
3. Google Tag Manager account and web container
4. GTM container installed on the website
5. Access to the website for testing

Step 1: Get the GA4 Measurement ID

Copy the Measurement ID, for example: G-XXXXXXXXXX

Step 2: Install the Google Tag in GTM

• Tag Type: Google tag
• Tag ID: G-XXXXXXXXXX
• Trigger: Initialization → All Initialization Events

Click Save.

Step 3: Create the GA4 Event Tag

• Tag Name: GA4 Event | Contact Form
• Measurement ID: Your GA4 Measurement ID
• Event Name: generate_lead

Use a recommended GA4 event name where one exists instead of creating an unnecessary custom event.

Step 4: Create the Event Trigger

Click Triggering → New.

• Trigger Type: All Elements
• Select: Some Clicks
• Example condition: Click Text → contains → Get Quote

Name the trigger: Click | Get Quote. Click Save.

Step 5: Connect the Trigger to the Event Tag

Open the GA4 Event tag. Under Triggering, select Click | Get Quote, then save.

Step 6: Test the Event

In GTM, click Preview. Enter your website URL and click Connect.

Perform the tracked action on the website.

Example: Click Get Quote → Tag Assistant → check whether the GA4 Event tag fired.

Step 7: Verify the Event in GA4

Perform the event again and check whether generate_lead appears.

You can also use GA4 → Admin → DebugView when testing with debug mode enabled.

Step 8: Publish GTM

After successful testing, go to:

Add a version name such as: Added Generate Lead Event. Click Publish.

Common Business Website Events

Recommended resources: Google Tag Manager Help and Google Analytics Help.